The TSL series includes Serfas' single-piece USB-rechargeable lights, designed for commuting, road biking, and off-road rides.

The latest in Serfas' USB-rechargeable TSL line, the TSL-750 is the first light to feature an interchangeable lens which can be swapped out between a flood configuration and a spot configuration to meet the demands of each ride. The TSL-750 also has a quick-release internal battery so you can bring extra power with you on longer rides.

The TSL series includes Serfas' single-piece USB-rechargeable lights, designed for commuting, road biking, and off-road rides.

The latest in Serfas' USB-rechargeable TSL line, the TSL-550 is one of Serfas' first lights to feature an interchangeable lens which can be swapped out between a flood configuration and a spot configuration to meet the demands of each ride. The TSL-550 also has a quick-release internal battery so you can bring extra power with you on longer rides.

The TSL series includes Serfas' single-piece USB-rechargeable lights, designed for commuting, road biking, and off-road rides.

The latest in Serfas' USB-rechargeable TSL line, the TSL-350 is one of Serfas' first lights to feature an interchangeable lens which can be swapped out between a flood configuration and a spot configuration to meet the demands of each ride. The TSL-350 also has a quick-release internal battery so you can bring extra power with you on longer rides.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

The USL-505 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and fast USB charging capability.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

The USL-305 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and fast USB charging capability.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

The USL-105 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and fast USB charging capability.

Serfas' USL series bike safety lights are primarily designed for being seen. Although not as bright as the high-powered TSL series lights, these lights are good for adding visibility to your bike when riding at night on lit roads. The 2015 product lineup will introduce several new high-power commuter headlights to the USL series.

The SL series is similar in design to the USL series, but uses non-rechargeable alkaline batteries instead of integrated USB-rechargeable lithium batteries.

The SL-255 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and uses removable AA batteries.

The SL series is similar in design to the USL series, but uses non-rechargeable alkaline batteries instead of integrated USB-rechargeable lithium batteries.

The SL-155 is part of Serfas's redesigned commuter headlight line to be available in 2015. The light features side visibility ports, a lower weight than Serfas' previous lights, and uses removable AA batteries.

The new Serfas Orion lights are high-visibility lights with a large illuminated surface area.

The Orion Blast features Serfas' new audible low-battery alert technology. The Orion headlight is primarily a safety and visibility light, with steady beam options up to 200 lumens, and flashing/pulsing options up to 300 lumens.

The Serfas Thunder series lights originated with the Thunderbolt headlight and taillight; among the first bike lights to feature a large array of micro LEDs. Variations on the original Thunderbolt are now available in different performance and output ranges.

The Serfas Thunder series lights originated with the Thunderbolt headlight and taillight; among the first bike lights to feature a large array of micro LEDs. Variations on the original Thunderbolt are now available in different performance and output ranges.

The Serfas Thunder series lights originated with the Thunderbolt headlight and taillight; among the first bike lights to feature a large array of micro LEDs. Variations on the original Thunderbolt are now available in different performance and output ranges.

The Thunder Blast headlight is an upgrade from the original Thunderbolt headlight, featuring up to 100 lumen output in solid or flashing modes, and including the new Serfas audible battery warning system.